极大痛苦
发表于 2025-3-30 11:23:22
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敏捷
发表于 2025-3-30 15:59:41
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母猪
发表于 2025-3-30 19:20:35
Antennas,nd Maxwell’s Equations..The formulas and statements in this chapter apply to the far-field (not the near-field), free-space, matched impedances (of antennas and receiver/transmitter equipment), and matched polarization (of the electromagnetic waves and the antenna polarization).
我悲伤
发表于 2025-3-31 00:20:49
Components,ts. Therefore, in this chapter, the high-frequency behavior and other undesirable effects of conductors (wires, cables, PCB traces), resistors, capacitors, inductors, ferrite beads, common-mode chokes, baluns, varistors, and TVS diodes are presented.
六个才偏离
发表于 2025-3-31 04:10:44
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易改变
发表于 2025-3-31 06:34:58
Shielding,aves, initially proposed by Schelkunoff ((1943) Electromagnetic waves. D. van Nostrand Company Inc, New York, pp 303–312) in 1943. The formulas in this chapter are approximations for shields with high electrical conductivity. Before we jump into the theory of shielding, here are two practical pieces of advice: